1. Material selection: The main application areas of the current waterproof junction box products are on-site and open-air sites where the environment is relatively harsh. From the perspective of product safety performance, the impact resistance, static load strength, insulation properties, *non-toxic*, anti-aging properties, corrosion resistance and flame retardancy of the material should be considered. (Non-toxic performance has been widely concerned, mainly because if the waterproof junction box product does not release toxic and harmful gases when it is exposed to fire, it is usually caused by the inhalation of a large amount of toxic gases in the event of fire. most.
2. Structural design: The overall strength, aesthetics, easy processing, easy installation and recyclability of the waterproof junction box should be considered. At present, the waterproof terminal box products produced by international mainstream manufacturers do not contain any metal fittings, which simplifies the product recycling process. However, most of the domestic manufacturers choose different materials, and the material has poor resistance to enthalpy. Generally, brass inserts are installed in the mounting sockets of the waterproof junction box to increase the installation strength, so that the material recovery process will Increase time and cost. If you use raw materials from high-performance indicators provided by regular manufacturers, you can solve such problems.
3. Wall thickness: Generally, when considering the overall cost of the product, the product should be as low as possible to meet the impact resistance and anti-deformation performance of the product. The international waterproof junction box is designed, ABS and PC. The wall thickness of the material product is generally between 2.5 and 3.5, the glass fiber reinforced polyester is generally between 5 and 6.5, and the wall thickness of the die-cast aluminum material is generally between 2.5 and 6. The material wall thickness should be designed to meet the installation requirements of most components and Accessories.
4. Selection of sealing apron materials: For waterproof junction box products, commonly used sealing aprons are: PUR, EPDM, Neoprene, Silicon. Temperature range, tensile strength, expansion ratio, hardness, density, compression ratio, and chemical resistance should be considered when selecting a sealing apron.
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